Labberton, R. H. (1873). Outlines of history: With original tables, chronological, genealogical and literary (4th ed, rev. and improved.). Claxton, Remsen & Haffelfinger.
Citace podle Chicago (17th ed.)Labberton, Robert H. Outlines of History: With Original Tables, Chronological, Genealogical and Literary. 4th ed, rev. and improved. Philadelphia: Claxton, Remsen & Haffelfinger, 1873.
Citace podle MLA (8th ed.)Labberton, Robert H. Outlines of History: With Original Tables, Chronological, Genealogical and Literary. 4th ed, rev. and improved. Claxton, Remsen & Haffelfinger, 1873.
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